Sorry, I genuinely don't think I've ever met a flying club owner clever and devious enough to create long checklists to create profit. Little god syndrome, causing them to think they know best, certainly. Expert syndrome, causing them to know they know best, for sure. But none of them would sacrifice their holy ability in the cockpit on the altar of inappropriate drills as some are suggesting.
The fundamental problem with many flying schools is that their owners have no idea about business. They become terribly uninviting places, unkempt and uncared-for. That's one good reason many fail. I can't make all of that marry up with scheming folk adding unnecessary checklist items to gain a few more moments airborne.